 Jack LemmonWendell Armbruster, Jr. | Wendell Armbruster, Jr. |
 Juliet MillsPamela Piggott | Pamela Piggott |
 Clive RevillCarlo Carlucci | Carlo Carlucci |
 Edward AndrewsJ.J. Blodgett | J.J. Blodgett |
 Gianfranco BarraBruno | Bruno |
 Franco AngrisanoArnoldo Trotta | Arnoldo Trotta |
 Pippo FrancoMattarazzo | Mattarazzo |
| FFranco AcamporaArmando Trotta | Armando Trotta |
 Giselda CastriniAnna | Anna |
| RRaffaele MottolaPassport Officer | Passport Officer |
| LLino ColettaCipriani | Cipriani |
| HHarry RayDr. Fleischmann | Dr. Fleischmann |
| GGuidarino GuidiMaitre D' | Maitre D' |
 Giacomo RizzoBarman | Barman |
 Antonino Faà di BrunoConcierge (as Antonino Faa' Di Bruno) | Concierge (as Antonino Faa' Di Bruno) |
 Yanti SomerNurse (as Yanti Sommer) | Nurse (as Yanti Sommer) |
 Janet ÅgrenNurse | Nurse |
| MMaría Rosa SclauzeroHostess | Hostess |
| MMelù ValenteHostess (as Melu' Valente) | Hostess (as Melu' Valente) |
 Aldo RendineRossi | Rossi |
 Bruno AliasMan at Airport (uncredited) | Man at Airport (uncredited) |
| SSergio BruniSinger Sergio Bruni (uncredited) | Singer Sergio Bruni (uncredited) |
| PPasquale CampagnolaPolice commissioner (uncredited) | Police commissioner (uncredited) |
 Nestore CavaricciMale Nurse (uncredited) | Male Nurse (uncredited) |
 Enrico CesarettiMan at Airport (uncredited) | Man at Airport (uncredited) |
| AArmando De MartinoAlberto Trotta (uncredited) | Alberto Trotta (uncredited) |
 Giorgio DolfinWaiter (uncredited) | Waiter (uncredited) |
| AAndrea EsterhazyHotel Guest (uncredited) | Hotel Guest (uncredited) |
 Ferruccio FregoneseMan at Aiport (uncredited) | Man at Aiport (uncredited) |
 Ettore GeriAirplane Passenger (uncredited) | Airplane Passenger (uncredited) |
